Cretaceous Foraminifera and the evolutionary history of planktic photosymbiosis

Author(s): D'Hondt, Steven; Zachos, James C.
Author Affiliation(s): Primary:
University of Rhode Island, Graduate School of Oceanography, Narrangansett, RI, United States
University of California, Santa Cruz, United States
Volume Title: Paleobiology
Source: Paleobiology, 24(4), p.512-523. Publisher: Franklin and Marshall College, Department of Geology, Lancaster, PA, United States. ISSN: 0094-8373 CODEN: PALBBM
Note: In English. 49 refs.; illus., incl. 3 tables
Summary: Ecotypic correlations between stable isotopic signals and skeletal size indicate that some Late Cretaceous serial planktic foraminifera were strongly photosymbiotic. In contrast, coeval trochospiral planktic foraminifera do not exhibit the isotope/size signatures that typify strongly photosymbiotic species. Comparison to Cenozoic taxa demonstrates that photosymbiosis has recurred throughout planktic foraminiferal history and has evolved independently in superfamilies characterized by very different gross skeletal morphologies. The historical contingency of that evolution is illustrated by the consequences of the Cretaceous/Paleogene mass extinction, which terminated the Cretaceous lineages of photosymbiotic planktic foraminifera but did not permanently extinguish photosymbiont reliance by planktic foraminifera.
Year of Publication: 1998
Research Program: DSDP Deep Sea Drilling Project
ODP Ocean Drilling Program
Key Words: 10 Paleontology, Invertebrate; 12 Stratigraphy, Historical Geology and Paleoecology; Biologic evolution; C-13/C-12; Carbon; Cenozoic; Cretaceous; Dinoflagellata; Ecology; Faunal list; Foraminifera; Holocene; Invertebrata; Isotope ratios; Isotopes; K-T boundary; Lower Paleocene; Mass extinctions; Mesozoic; O-18/O-16; Oxygen; Paleocene; Paleoecology; Paleogene; Palynomorphs; Photosymbiosis; Planktonic taxa; Pleistocene; Protista; Quaternary; Size; Solar energy; Stable isotopes; Stratigraphic boundary; Symbiosis; Tertiary; Upper Cretaceous
Record ID: 1999036687
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute.

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